What is the purpose of purging with nitrogen while brazing?

A) To prevent oxide formation inside the pipes
B) To blow the oxides off the walls before it has a chance to firmly adhere
C) To help the flame burn a little hotter
D) To check for leaks at the same time you are brazing


A

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You should be able to become a mechanical insulator after a minimum of _____.

a. 1 year b. 2 years c. 3 years d. 4 years

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The heat input is nearest:

Refer to the Rankine cycle with temperatures and pressures shown. Note that m = 2 kg/s of water.
.
A) 3670 kJ/s
B) 3460 kJ/s
C) 3010 kJ/s
D) 2870 kJ/s

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Match the definition to the correct term.

A. The record of a particular animal's ancestry. B. The amount of marbling and carcass grade. C. The meatiness of the animal. D. Animal kept for the purpose of breeding.

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The 74LS47 is an IC used to ________ and ________

Fill in the blank(s) with correct word

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